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Chitosan content modulates durability and structural homogeneity of chitosan-gellan gum assemblies.
de Oliveira, Ariel C; Vilsinski, Bruno H; Bonafé, Elton G; Monteiro, Johny P; Kipper, Matt J; Martins, Alessandro F.
Afiliação
  • de Oliveira AC; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology (UTFPR), 86812-460 Apucarana, Paraná, Brazil.
  • Vilsinski BH; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology (UTFPR), 86812-460 Apucarana, Paraná, Brazil.
  • Bonafé EG; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology (UTFPR), 86812-460 Apucarana, Paraná, Brazil.
  • Monteiro JP; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology (UTFPR), 86812-460 Apucarana, Paraná, Brazil.
  • Kipper MJ; Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States.
  • Martins AF; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology (UTFPR), 86812-460 Apucarana, Paraná, Brazil; Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States. Electronic address: afmartins@ut
Int J Biol Macromol ; 128: 114-123, 2019 May 01.
Article em En | MEDLINE | ID: mdl-30682481
Here we report a new and straightforward method to yield durable polyelectrolyte complexes (hydrogel PECs) from gellan gum (GG) and chitosan (CS) assemblies, without metallic and covalent crosslinking agents, commonly used to produce GG and CS-based hydrogels, respectively. This new approach overcomes challenges of obtaining stable and durable GG-based hydrogels with structural homogeneity, avoiding precipitation and aqueous instability, typical of PEC-based materials. PECs are created by blending CS:GG solutions (at 60 °C) with GG:CS weight ratios between 80:20 to 40:60. X-ray photoelectron spectroscopy (XPS) analysis shows that CS-GG chains are interacting by electrostatic and intermolecular forces, conferring a high degree of association to the washed PECs, characteristic of self-assembling of polymer chains. The CS:GG weight ratio can be tuned to improve polyelectrolyte complex (PEC) high porosity, stability, porous homogeneity, and degradation rate. Physical and thermosensitive CS/GG-based hydrogels can have advantages over conventional materials produced by chemical processes.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polissacarídeos Bacterianos / Quitosana Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polissacarídeos Bacterianos / Quitosana Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda